-Pour beer into a pint glass; set aside.
-Pour amaretto into a shot glass, then pour rum on top.
-Hold a flame to the top of the shot glass to light the
rum.
-Carefully drop the shot glass into the beer.

(1) Visitor
Comment:

I
served these many times years ago. As I recall,
there were three liquers in addition to the 151.
Everything went into a shot glass, so we used a
highball glass for the beer and only filled it
high enough to cover the shot glass (and
extinguish the flame). I believe the shot glass
contained equal parts of Kahlua, Amaretto, and
Creme de Cacao, with a 151 float on top. Lighting
it is easy; getting it to the highball without
catching the bar on fire is a bit more
challenging!